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</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>下表列出了所有Go语言的算术运算符。假定 A 值为 10，B 值为 20。</p> <table><thead><tr><th style="text-align:center;">运算符</th> <th>描述</th> <th>实例</th></tr></thead> <tbody><tr><td style="text-align:center;">+</td> <td>相加</td> <td>A + B 输出结果 30</td></tr> <tr><td style="text-align:center;">-</td> <td>相减</td> <td>A - B 输出结果 -10</td></tr> <tr><td style="text-align:center;">*</td> <td>相乘</td> <td>A * B 输出结果 200</td></tr> <tr><td style="text-align:center;">/</td> <td>相除</td> <td>B / A 输出结果 2</td></tr> <tr><td style="text-align:center;">%</td> <td>求余</td> <td>B % A 输出结果 0</td></tr> <tr><td style="text-align:center;">++</td> <td>自增</td> <td>A++ 输出结果 11</td></tr> <tr><td style="text-align:center;">--</td> <td>自减</td> <td>A-- 输出结果 9</td></tr></tbody></table> <h2 id="_2-关系运算符"><a href="#_2-关系运算符" class="header-anchor">#</a> 2 关系运算符</h2> <div class="language-go line-numbers-mode"><pre class="language-go"><code><span class="token operator">==</span> <span class="token operator">!=</span> <span class="token operator">&gt;</span> <span class="token operator">&lt;</span> <span class="token operator">&gt;=</span> <span class="token operator">&lt;=</span>
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><table><thead><tr><th style="text-align:center;">运算符</th> <th>描述</th></tr></thead> <tbody><tr><td style="text-align:center;">==</td> <td>检查两个值是否相等，如果相等返回 True 否则返回 False。	(A == B) 为 False</td></tr> <tr><td style="text-align:center;">!=</td> <td>检查两个值是否不相等，如果不相等返回 True 否则返回 False。	(A != B) 为 True</td></tr> <tr><td style="text-align:center;">&gt;</td> <td>检查左边值是否大于右边值，如果是返回 True 否则返回 False。	(A &gt; B) 为 False</td></tr> <tr><td style="text-align:center;">&lt;</td> <td>检查左边值是否小于右边值，如果是返回 True 否则返回 False。	(A &lt; B) 为 True</td></tr> <tr><td style="text-align:center;">&gt;=</td> <td>检查左边值是否大于等于右边值，如果是返回 True 否则返回 False。	(A &gt;= B) 为 False</td></tr> <tr><td style="text-align:center;">&lt;=</td> <td>检查左边值是否小于等于右边值，如果是返回 True 否则返回 False。	(A &lt;= B) 为 True</td></tr></tbody></table> <h2 id="_3-逻辑运算符"><a href="#_3-逻辑运算符" class="header-anchor">#</a> 3 逻辑运算符</h2> <table><thead><tr><th style="text-align:center;">运算符</th> <th>描述</th></tr></thead> <tbody><tr><td style="text-align:center;">&amp;&amp;</td> <td>所谓逻辑与运算符。如果两个操作数都非零，则条件变为真</td></tr> <tr><td style="text-align:center;">||</td> <td>所谓的逻辑或操作。如果任何两个操作数是非零，则条件变为真</td></tr> <tr><td style="text-align:center;">!</td> <td>所谓逻辑非运算符。使用反转操作数的逻辑状态。若条件为真，那么逻辑非操后结果为假</td></tr></tbody></table> <h2 id="_4-位运算符"><a href="#_4-位运算符" class="header-anchor">#</a> 4 位运算符</h2> <table><thead><tr><th>A</th> <th>B</th> <th>A&amp;B</th> <th>A|B</th> <th>A^B</th></tr></thead> <tbody><tr><td>0</td> <td>0</td> <td>0</td> <td>0</td> <td>0</td></tr> <tr><td>0</td> <td>1</td> <td>0</td> <td>1</td> <td>1</td></tr> <tr><td>1</td> <td>1</td> <td>1</td> <td>1</td> <td>0</td></tr> <tr><td>1</td> <td>0</td> <td>0</td> <td>1</td> <td>1</td></tr></tbody></table> <p>这里最难理解的就是^了，只要认为AB两者都相同的时候，为0，其他都为1</p> <p>假设A为60，B为13</p> <table><thead><tr><th>运算</th> <th>描述</th> <th>示例</th></tr></thead> <tbody><tr><td>&amp;</td> <td>二进制与操作副本位的结果，如果它存在于两个操作数</td> <td>(A &amp; B) = 12, 也就是 0000 1100</td></tr> <tr><td>|</td> <td>二进制或操作副本，如果它存在一个操作数</td> <td>(A | B) = 61, 也就是 0011 1101</td></tr> <tr><td>^</td> <td>二进制异或操作副本，如果它被设置在一个操作数就是按位取非</td> <td>(A ^ B) = 49, 也就是 0011 0001</td></tr> <tr><td>&amp;^</td> <td>二进制位清空&amp;^</td> <td>(A&amp;^B)=48，也就是110000</td></tr> <tr><td>&lt;&lt;</td> <td>二进制左移位运算符。左边的操作数的值向左移动由右操作数指定的位数</td> <td>A &lt;&lt; 2 =240 也就是 1111 0000</td></tr> <tr><td>&gt;&gt;</td> <td>二进制向右移位运算符。左边的操作数的值由右操作数指定的位数向右移动</td> <td>A &gt;&gt; 2 = 15 也就是 0000 1111</td></tr></tbody></table> <h2 id="_5-赋值运算符"><a href="#_5-赋值运算符" class="header-anchor">#</a> 5 赋值运算符</h2> <table><thead><tr><th>运算符</th> <th>描述</th> <th>示例</th></tr></thead> <tbody><tr><td>=</td> <td>简单的赋值操作符，分配值从右边的操作数左侧的操作数</td> <td>C = A + B 将分配A + B的值到C</td></tr> <tr><td>+=</td> <td>相加并赋值运算符，它增加了右操作数左操作数和分配结果左操作数</td> <td>C += A 相当于 C = C + A</td></tr> <tr><td>-=</td> <td>减和赋值运算符，它减去右操作数从左侧的操作数和分配结果左操作数</td> <td>C -= A 相当于 C = C - A</td></tr> <tr><td>*=</td> <td>乘法和赋值运算符，它乘以右边的操作数与左操作数和分配结果左操作数</td> <td>C *= A 相当于 C = C * A</td></tr> <tr><td>/=</td> <td>除法赋值运算符，它把左操作数与右操作数和分配结果左操作数</td> <td>C /= A 相当于 C = C / A</td></tr> <tr><td>%=</td> <td>模量和赋值运算符，它需要使用两个操作数的模量和分配结果左操作数</td> <td>C %= A 相当于 C = C % A</td></tr> <tr><td>&lt;&lt;=</td> <td>左移位并赋值运算符</td> <td>C &lt;&lt;= 2 相同于 C = C &lt;&lt; 2</td></tr> <tr><td>&gt;&gt;=</td> <td>向右移位并赋值运算符</td> <td>C &gt;&gt;= 2 相同于 C = C &gt;&gt; 2</td></tr> <tr><td>&amp;=</td> <td>按位与赋值运算符</td> <td>C &amp;= 2 相同于 C = C &amp; 2</td></tr> <tr><td>^=</td> <td>按位异或并赋值运算符</td> <td>C ^= 2 相同于 C = C ^ 2</td></tr> <tr><td>|=</td> <td>按位或并赋值运算符</td> <td>C |= 2 相同于 C = C | 2</td></tr></tbody></table> <h2 id="_6优先级运算符优先级"><a href="#_6优先级运算符优先级" class="header-anchor">#</a> 6优先级运算符优先级</h2> <p>有些运算符拥有较高的优先级，二元运算符的运算方向均是从左至右。下表列出了所有运算符以及它们的优先级，由上至下代表优先级由高到低：</p> <table><thead><tr><th>优先级</th> <th>运算符</th></tr></thead> <tbody><tr><td>7</td> <td>~ ! ++ --</td></tr> <tr><td>6</td> <td>* / % &lt;&lt; &gt;&gt; &amp; &amp;^</td></tr> <tr><td>5</td> <td>+ -  ^</td></tr> <tr><td>4</td> <td>== != &lt; &lt;= &gt;= &gt;</td></tr> <tr><td>3</td> <td>&lt;-</td></tr> <tr><td>2</td> <td>&amp;&amp;</td></tr> <tr><td>1</td> <td>||</td></tr></tbody></table> <p>当然，你可以通过使用括号来临时提升某个表达式的整体运算优先级。</p></div> <footer class="page-edit"><!----> <!----></footer> <div class="page-nav"><p class="inner"><span class="prev">
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